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Thermal Cycling of Thin and Thick Ply CompositesAn experimental study was conducted to determine the effects of ply thickness in composite laminates on thermally induced cracking and changes in the coefficient of thermal expansion (CTE). After a few thermal cycles, laminates with thick-plies cracked, resulting in large changes in CTE. CTE's of the thin-ply laminates were unaffected by microcracking during the first 500 thermal cycles, whereas, the CTE's of the thick-ply laminates changed significantly. After about 1500 cycles, microdamage had also reduced the CTE of the thin-ply laminates to a value of about half of their initial value.
Document ID
19960026075
Acquisition Source
Langley Research Center
Document Type
Reprint (Version printed in journal)
Authors
Tompkins, Stephen S. (NASA Langley Research Center Hampton,VA United States)
Shen, James Y. (Lockheed Engineering and Sciences Co. Hampton, VA United States)
Lavoie, Andre J. (Lockheed Engineering and Sciences Co. Hampton, VA United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1994
Subject Category
Composite Materials
Report/Patent Number
NASA-TM-111552
NAS 1.15:111552
Meeting Information
Meeting: Engineering, Construction, and Operations in SPACE IV
Location: Albuquerque, NM
Country: United States
Start Date: February 26, 1994
End Date: March 3, 1994
Sponsors: American Society of Civil Engineers
Accession Number
96N27822
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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